CN204929358U - Multistage actuating system of LED - Google Patents
Multistage actuating system of LED Download PDFInfo
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- CN204929358U CN204929358U CN201520710914.7U CN201520710914U CN204929358U CN 204929358 U CN204929358 U CN 204929358U CN 201520710914 U CN201520710914 U CN 201520710914U CN 204929358 U CN204929358 U CN 204929358U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a multistage actuating system of LED, including a cascaded N LED drive module, LED drive module includes two way signal input interfaces and two way signal output interfaces, the drive control signal who comes from LED display controller is received to first LED drive module's first via signal input interface, an i LED drive module's first via signal input interface is used for receiving the the first signal who comes from an i -1 LED drive module to will through first via signal output interface the first signal carries the LED drive module for i+1, an i LED drive module's second way signal input interface is used for receiving the second signal that comes from an i -1 LED drive module to through second way signal output interface general the LED drive module for i+1 is carried to the second signal. When certain signal transmission that goes the same way of the LED drive module of certain one -level broke down, another way signal still can regular transmission LED drive data, can improve the reliability that LED drove data transmission among the above -mentioned multistage actuating system of LED.
Description
Technical field
The utility model relates to LED signal transmission and drives, and particularly relates to LED multiple drive power system.
Background technology
Along with updating of LED application technology, LED is applied in our daily life and becomes more and more extensive, and technology is also day by day ripe.In multi-stage LED drives, (such as the LED for open air is decorated to the LED driving of guardrail pipe), the drive circuit of every one-level all can drive one group of LED, and the driving data of LED will through multistage transmission, and guarantee LED at different levels can be lit.
In traditional multi-stage LED driving circuit, the driving data of LED all adopts single-line series cascaded transmission, driving data is all that serial transmits one by one backward, the input data of the LED drive circuit of every one-level are all the output data from upper level LED drive circuit, when the LED drive circuit of wherein certain one-level breaks down, LED drive circuit subsequently just cannot receive driving data, cause the LED later from fault point all cannot light, a part of LED is not controlled will directly affect the display effect of LED entirety.Details, also there is the display of long range propagation signal waveform distortion LED unstable, the problem of poor anti jamming capability.
Utility model content
Based on this, be necessary for when the LED drive circuit of wherein certain one-level breaks down, cause the LED drive module later from fault point normally to work, cause that a part of LED is uncontrolled will directly affect the display effect problem of LED entirety, a kind of LED multiple drive power circuit is provided.
A kind of LED multiple drive power system, comprise N number of LED drive module of cascade, described LED drive module comprises two paths of signals input interface and two paths of signals output interface;
The first via signal input interface of first LED drive module in described N number of LED drive module receives the drive control signal from LED display controller;
Described first signal for receiving the first signal from the i-th-1 LED drive module, and is flowed to the i-th+1 LED drive module by first via signal output interface by the first via signal input interface of i-th LED drive module in described N number of LED drive module;
Described secondary signal for receiving the secondary signal from the i-th-1 LED drive module, and is flowed to the i-th+1 LED drive module by the second road signal output interface by the second road signal input interface of i-th LED drive module in described N number of LED drive module.
Wherein in an embodiment, described first signal is the positive phase signals of data-signal, and described secondary signal is the inversion signal of same described data-signal.
Wherein in an embodiment, described LED drive module comprise power supply, for the treatment of driving data signal driving control unit, for signal is carried out filtering signal filtering unit, for drive singal is carried out amplify control signal amplification unit;
Described power supply is electrically connected with described driving control unit through described signal filtering unit;
Described signal amplification unit is electrically connected with described driving control unit.
Wherein in an embodiment, described driving control unit comprises and is respectively used to receive two input ports that prime LED drive module exports the first signal, secondary signal; And export the first signal to the output port of rear class LED drive module.
Wherein in an embodiment, described LED drive module also comprises isolation resistance, and described isolation resistance is used for the transmission of auxiliary signal, and the two ends of described isolation resistance connect described driving control unit, described signal amplification unit respectively.
Wherein in an embodiment, described signal filtering unit comprises resistance, electric capacity;
Described resistance, capacitances in series form resistance capacitance filter circuit, for power filter, and power to driving control unit.
Wherein in an embodiment, described signal amplification unit is inverting amplifier, and described inverting amplifier is for the control of the amplification and signal inversion that realize drive singal; The input of described inverting amplifier is connected with described driving control unit through isolation resistance, be also connected with the first via signal output interface of prime LED drive module; The output of described inverting amplifier is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module.
Wherein in an embodiment, described signal amplification unit is N-type metal semiconductor field effect transis, and described N-type metal semiconductor field effect transis controls for the amplification realizing drive singal; The grid of described N-type metal semiconductor field effect transis is connected with described driving control unit through isolation resistance respectively, be also connected with the first via signal output interface of prime LED drive module; The drain electrode of described N-type metal semiconductor field effect transis is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module; The source ground of described N-type metal semiconductor field effect transis.
Wherein in an embodiment, described signal amplification unit is P type metal semiconductor field effect transis, and described P type metal semiconductor field effect transis controls for the amplification realizing drive singal; The grid of described P type metal semiconductor field effect transis is connected with described driving control unit through isolation resistance respectively, is also connected with the first via signal output interface of prime LED drive module; The drain electrode of described P type metal semiconductor field effect transis is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module; The source electrode of described P type metal semiconductor field effect transis connects power supply.
Wherein in an embodiment, described LED drive module also comprises each LED, corresponding drived control at least 1 red LED of described LED drive module, 1 green LED and 1 blue led.
In above-mentioned LED multiple drive power system, the LED drive module in LED strip connection cascade system comprises two paths of signals input interface and two paths of signals output interface, and wherein first via signal input, output interface are used for receiving and exporting the first signal; Second road signal input, output interface are used for receiving and exporting secondary signal.When so ensureing that driving control unit element in the LED drive module of certain one-level or its peripheral component break down, only affect the transmission of a wherein road signal, but another road signal still can normal transmission LED drive data, connected rear class LED drive module normally can receive LED drive data, and then make all LED of being connected in series thereafter can normal controlled display, the reliability of LED drive data transmission can be improved.
Accompanying drawing explanation
Fig. 1 is LED multiple drive power system diagram;
Fig. 2 is the circuit theory diagrams of single led driver module in a specific embodiment;
Fig. 3 is the circuit theory diagrams of single led driver module in a specific embodiment;
Fig. 4 is the circuit theory diagrams of single led driver module in a specific embodiment.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe specific embodiment, is not intended to limit the utility model.Term as used herein "and/or" comprises arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, LED multiple drive power system in figure, comprise cascade N number of LED drive module 10 (1,2 ..., N), LED display controller 20, main signal line 30 and standby holding wire 40, wherein:
LED drive module comprises two paths of signals input interface and two paths of signals output interface; The two paths of signals input interface of LED drive module 10 is first via signal input interface and inversion signal input interface; The two paths of signals output interface of LED drive module 10 is first via signal output interface and inversion signal output interface.
Main signal line 30 is for transmitting the first signal, and standby holding wire 40 is for transmitting secondary signal.
The first via signal input interface of first LED drive module 10 (1) receives the drive control signal from LED display controller 20.
The first via signal input interface of i-th LED drive module 10 (i) is used for receiving the first signal from the i-th-1 LED drive module 10 (i-1), and by first via signal output interface, the first signal is flowed to rear class LED drive module 10 (i+1); Second road signal input interface of i-th LED drive module 10 (i) is used for receiving the secondary signal from the i-th-1 LED drive module 10 (i-1), and by the second road signal output interface, secondary signal is flowed to rear class LED drive module 10 (i+1).First signal is the positive phase signals of data-signal, and secondary signal is the inversion signal of same described data-signal.
In specification, if LED drive module is i-th, then the prime LED drive module of this i-th LED drive module 10 (i) is LED drive module 10 (i-1), then the rear class LED drive module of this i-th LED drive module 10 (i) is LED drive module 10 (i+1).
Further, the positive signal input part of first LED drive module 10 (1) is connected with the output interface of LED display controller 20, receive the drive control signal from LED displays all in the control whole piece link of LED display controller 20, the inversion signal input interface of first LED drive module 10 (1) keeps unsettled; The signal input interface of second LED drive module 10 (2) connects the positive signal output interface of first LED drive module 10 (1), and the inversion signal input interface of second LED drive module 10 (2) connects the inversion signal output interface of first LED drive module 10 (1); By that analogy, the positive signal input interface of every one-level LED drive module 10 (i) connects the positive signal output interface of previous stage LED drive module 10 (i-1) all successively, transmit positive phase signals, the inversion signal input interface of every one-level LED drive module 10 (i) connects the inversion signal output interface of previous stage LED drive module 10 (i-1) all successively, transmission inversion signal.
The driving data of every one-level LED drive module 10 (i) is all directed to the output of upper level LED drive module 10 (i-1), LED drive module in LED multiple drive power system comprises two paths of signals input interface and two paths of signals output interface, and wherein first via signal input, output interface are used for receiving and exporting the first signal; Second road signal input, output interface are used for receiving and exporting secondary signal.When so ensureing that driving control unit element in the LED drive module of certain one-level or its peripheral component break down, only affect the transmission of a wherein road signal, but another road signal still can normal transmission LED drive data, connected rear class LED drive module normally can receive LED drive data, and then makes all LED be connected in series thereafter can normal controlled display.
As shown in Figure 2 be the circuit theory diagrams of single led driver module, in figure LED drive module 10 comprise power supply VCC, for the treatment of driving data signal driving control unit 110, for signal is carried out filtering signal filtering unit 120, amplify for carrying out drive singal the signal amplification unit 130 controlled; Power supply VCC is electrically connected with driving control unit 110 through signal filtering unit 120; Signal amplification unit 130 is electrically connected with driving control unit 110.
LED drive module also comprises isolation resistance R2, and isolation resistance R2 is used for the transmission of auxiliary signal, and the two ends of isolation resistance R2 connect driving control unit 110, signal amplification unit 130 respectively.
Signal filtering unit 120 comprises resistance R1, electric capacity C1; Resistance R1, electric capacity C1 resistance capacitance RC in series filter circuit, for power filter, and power to driving control unit 110.
Signal amplification unit 130 is inverting amplifier M1, and inverting amplifier M1 controls for the amplification realizing drive singal; The input of inverting amplifier M1 is connected with driving control unit 110 through isolation resistance R2, be also connected with the first via signal output interface of prime LED drive module; The output of inverting amplifier M1 is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module.
Driving control unit 110 is transmission control driving chip U1 further, the positive signal input part (6 pin of chip U1) of chip U1 receives the signal that positive phase signals exports or LED display controller exports from previous stage LED drive module, namely from the signal that positive phase signals exports or LED display controller exports of previous stage LED drive module through isolation resistance R2, enter 6 pin of chip U1, this signal is connected with the input of signal inversion amplifier M1 simultaneously.
Resistance R1 in signal filtering unit 120 and electric capacity C1 forms simple RC electric source filter circuit, is connected, powers to chip U1 with 8 pin of chip U1, and resistance R1 also plays chip U1 power supply metering function simultaneously.
The inversion signal input (7 pin of chip U1) of chip U1 receives the inversion signal from previous stage LED drive module, and namely inversion signal directly enters 7 pin of chip U1.Chip U1 aligns phase input signal, rp input signal processes, and takes out the LED drive control signal of self.Positive signal output part is connected with 5 pin of chip U1, and the signal of rear class LED drive module is sent.
The signal exported from the positive phase signals of previous stage LED drive module or LED display controller is connected with the input of inverting amplifier M1, through inverting amplifier M1, signal is amplified, anti-phase process and through the output of inverting amplifier M1 by inverted signal transmission to the inversion signal input of the LED drive module of next stage.
When positive/negative phase signals is all normal, if positive signal level exceeds inversion signal level be namely considered to the input of signal high level, otherwise is namely considered to the input of signal low level, is equivalent to differential signal process; When inversion signal is abnormal, if namely a certain fixed level that then positive signal level exceeds inner setting is considered to the input of signal high level, otherwise be namely considered to the input of signal low level; When positive abnormal signal, if namely a certain fixed level that then inversion signal level exceeds inner setting is considered to the input of signal high level, otherwise be namely considered to the input of signal low level.
Realize strengthening signal antijamming capability by signal inversion and chip internal positive/negative phase signals contrast process, improve Signal transmissions reliability.
In another embodiment, as shown in Figure 3, signal amplification unit 130 can also be N-type metal semiconductor field effect transis M2, i.e. N-MOSFET pipe.In signals transmission, the LED drive module positive signal input part of upper level is connected with the gate input of N-type metal semiconductor field effect transis M2, inversion signal output is connected with the drain output of N-type metal semiconductor field effect transis M2, inversion signal is seen off, the source ground of N-type metal semiconductor field effect transis M2.
In another embodiment, as shown in Figure 4, signal amplification unit 130 can also be P type metal semiconductor field effect transis M3, i.e. P-MOSFET pipe.In signals transmission, the LED drive module positive signal input part of upper level is connected with the gate input of P type metal semiconductor field effect transis M3, inversion signal output is connected with the drain output of P type metal semiconductor field effect transis M3, inversion signal is seen off, and the source electrode of P type metal semiconductor field effect transis M3 connects power supply.
LED drive module also comprises each LED, corresponding drived control at least 1 red LED of described LED drive module, 1 green LED and 1 blue led, and removes drived control redness, green, blue led lamp through 1,2, the 3 pin outputs of chip U1.
By this multi-stage LED multiple drive power system, have at least a road signal can normally to rear class LED drive module transmission data when damaging when the driving control unit in same LED drive module is different with signal amplification unit, this ensures that there driving control unit in same LED drive module different with signal amplification unit time have at least a road signal normally past rear class LED drive module can transmit data when damaging.
By signal amplification unit, data-signal is exaggerated, achieve enhancing signal transmission distance, control driving chip U1 inner positive/negative phase signals contrast process by the signal inversion of signal amplification unit and the transmission of LED driving control unit to realize strengthening signal antijamming capability, improve Signal transmissions reliability.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a LED multiple drive power system, comprises N number of LED drive module of cascade, it is characterized in that, described LED drive module comprises two paths of signals input interface and two paths of signals output interface;
The first via signal input interface of first LED drive module in described N number of LED drive module receives the drive control signal from LED display controller;
Described first signal for receiving the first signal from the i-th-1 LED drive module, and is flowed to the i-th+1 LED drive module by first via signal output interface by the first via signal input interface of i-th LED drive module in described N number of LED drive module;
Described secondary signal for receiving the secondary signal from the i-th-1 LED drive module, and is flowed to the i-th+1 LED drive module by the second road signal output interface by the second road signal input interface of i-th LED drive module in described N number of LED drive module.
2. LED multiple drive power system according to claim 1, is characterized in that, described first signal is the positive phase signals of data-signal, and described secondary signal is the inversion signal of same described data-signal.
3. LED multiple drive power system according to claim 1, it is characterized in that, described LED drive module comprise power supply, for the treatment of driving data signal driving control unit, for signal is carried out filtering signal filtering unit, for drive singal is carried out amplify control signal amplification unit;
Described power supply is electrically connected with described driving control unit through described signal filtering unit;
Described signal amplification unit is electrically connected with described driving control unit.
4. LED multiple drive power system according to claim 3, is characterized in that, described driving control unit comprises and is respectively used to receive two input ports that prime LED drive module exports the first signal, secondary signal; And export the first signal to the output port of rear class LED drive module.
5. LED multiple drive power system according to claim 3, it is characterized in that, described LED drive module also comprises isolation resistance, and described isolation resistance is used for the transmission of auxiliary signal, and the two ends of described isolation resistance connect described driving control unit, described signal amplification unit respectively.
6. LED multiple drive power system according to claim 3, is characterized in that, described signal filtering unit comprises resistance, electric capacity;
Described resistance, capacitances in series form resistance capacitance filter circuit, for power filter, and power to driving control unit.
7. LED multiple drive power system according to claim 3, is characterized in that, described signal amplification unit is inverting amplifier, and described inverting amplifier is for the control of the amplification and signal inversion that realize drive singal; The input of described inverting amplifier is connected with described driving control unit through isolation resistance, be also connected with the first via signal output interface of prime LED drive module; The output of described inverting amplifier is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module.
8. LED multiple drive power system according to claim 3, is characterized in that, described signal amplification unit is N-type metal semiconductor field effect transis, and described N-type metal semiconductor field effect transis controls for the amplification realizing drive singal; The grid of described N-type metal semiconductor field effect transis is connected with described driving control unit through isolation resistance respectively, be also connected with the first via signal output interface of prime LED drive module; The drain electrode of described N-type metal semiconductor field effect transis is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module; The source ground of described N-type metal semiconductor field effect transis.
9. LED multiple drive power system according to claim 3, is characterized in that, described signal amplification unit is P type metal semiconductor field effect transis, and described P type metal semiconductor field effect transis controls for the amplification realizing drive singal; The grid of described P type metal semiconductor field effect transis is connected with described driving control unit through isolation resistance respectively, is also connected with the first via signal output interface of prime LED drive module; The drain electrode of described P type metal semiconductor field effect transis is connected, for exporting secondary signal with the second road signal input interface of rear class LED drive module; The source electrode of described P type metal semiconductor field effect transis connects power supply.
10. LED multiple drive power system according to claim 1, it is characterized in that, described LED drive module also comprises each LED, corresponding drived control at least 1 red LED of described LED drive module, 1 green LED and 1 blue led.
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| CN201520710914.7U CN204929358U (en) | 2015-09-14 | 2015-09-14 | Multistage actuating system of LED |
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| CN201520710914.7U CN204929358U (en) | 2015-09-14 | 2015-09-14 | Multistage actuating system of LED |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698814A (en) * | 2020-07-02 | 2020-09-22 | 东莞市华彩威科技有限公司 | LED driving circuit with double-line input and output and transmission method thereof |
| CN113628581A (en) * | 2021-10-11 | 2021-11-09 | 杭州视芯科技有限公司 | LED driving circuit, driving method and LED display system |
| CN114241984A (en) * | 2022-02-08 | 2022-03-25 | 深圳市绿源半导体技术有限公司 | LED driving device, multistage LED driving system and driving method |
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2015
- 2015-09-14 CN CN201520710914.7U patent/CN204929358U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698814A (en) * | 2020-07-02 | 2020-09-22 | 东莞市华彩威科技有限公司 | LED driving circuit with double-line input and output and transmission method thereof |
| CN113628581A (en) * | 2021-10-11 | 2021-11-09 | 杭州视芯科技有限公司 | LED driving circuit, driving method and LED display system |
| CN113628581B (en) * | 2021-10-11 | 2022-03-15 | 杭州视芯科技股份有限公司 | LED driving circuit, driving method and LED display system |
| WO2023060845A1 (en) * | 2021-10-11 | 2023-04-20 | 杭州视芯科技股份有限公司 | Led driving circuit, driving method, and led display system |
| CN114241984A (en) * | 2022-02-08 | 2022-03-25 | 深圳市绿源半导体技术有限公司 | LED driving device, multistage LED driving system and driving method |
| WO2023151703A1 (en) * | 2022-02-08 | 2023-08-17 | 深圳市绿源半导体技术有限公司 | Led driving apparatus, multi-stage led driving system and led driving method |
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